High End Systems x.Spot - Table 3-1 Example: Determining DMX Start Channels on a Link

x.Spot™ User Manual Fixture Operation 3-7
3
The notes in Table 3-1 show the various considerations in determining valid Start
Channels for fixtures on a 512 DMX link. A single 512-Channel DMX link can
accommodate up to thirteen 38-channel standard x.Spot fixtures.
Table 3-1 Example: Determining DMX Start Channels on a Link
When setting the Start channel on a fixture, remember:
• A fixture’s physical location on the link does not have to coincide with the order
of channel range assignments in the link. See Row 2 in Table 3-1.
• The fixture’s channel range must not overlap any other device’s channel range on
the link. When two devices on the same DMX link have overlapping channel
ranges, one or both devices will be disabled or behave erratically. The single
exception would be if two or more fixtures need to respond to controller
commands in exactly the same way. In that case, those fixtures must be the same
type (for example two x.Spot fixtures) and must share the entire channel range.
Fixture
location
on the
link
Fixture type
DMX
channels
used per
fixture
DMX
Start
channel
Channel
range
used
Notes
First x.Spot 38 channels C001 1-38
The Start channel indicates a block
of channels assigned to a fixture
with the first number in that
channel range.
Third x.Spot 38 channels C039 39-76
Fixture can be assigned the
second block of DMX channels
without physically being the second
fixture on the link.
Second x.Spot 38 channels C078 77-114
To avoid overlapping channels,
place the start channel at the
beginning of a range of available
channels large enough to
accommodate that fixture type
Fourth Studio Spot 18 channels C121 121-138
Every channel in the link does not
need to be assigned.
Fifth
Custom x.Spot
(Color Mix only)
22 channels C140 139-160
The channel range required for a
fixture type can change with
custom fixtures
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